Below we take a look at how each of the aforementioned quadruple have fared at the quarter-final stage in the Champions League era (1992/93 onwards). Individual play between the three of them, interplay.

"With the others, Juventus can play on equal terms". We want as many (as possible) going forward.

"In previous years, we have always had the belief that the Premier League is the best in the world".

The other clubs to have booked their spots are European giants Juventus and Barcelona, and surprise packages Porto and Ajax - the latter of whom dethroned Real Madrid last week. Ronaldo's never even been on the losing side against English opposition in the knock-out stages of the Champions League even dating back to his time at United, when Sir Alex Ferguson's men overcame the likes of Chelsea and Arsenal in all-English encounters.

While they are by no means firing on all cylinders, Liverpool can take great confidence from the fact they have got through two tough fixtures which if they had lost would have seriously damaged their season.

Manchester City made it to the last eight of the competition with a statement-making 7-0 win over Schalke in the second leg of their last 16 tie at the Etihad.

So, English football is back, capped by Liverpool's victory in Munich on Wednesday night, but is the Premier League ready, once again, to dominate the Champions League? We'll find out shortly and, in a special twist, we'll also see the semi-final draw.